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Developing a plastic cycle toward circular economy practice
Green Processing and Synthesis ( IF 4.3 ) Pub Date : 2022-01-01 , DOI: 10.1515/gps-2022-0014
Tuyet T. A. Nguyen 1 , Yen T. Ta 1, 2 , Prasanta K. Dey 3
Affiliation  

Abstract This study develops a plastic cycle toward circular economy practice in Vietnam. First, we analyze inter-relationships between economic sectors and environmental issues concerning plastic waste in 2018. The research method integrates interdisciplinary balance with life cycle inventory, in which input–output (IO) table is both an econometric tool and original database to determine plastic IO between industries. As a result, over 60% of plastics after use was recycled for the production process (called recycled plastics) and nearly 40% of plastics after-use left the process (called disposed plastics). Within the recycled plastics, there was 10–15% of informal recycling collection from trade villages; within the disposed plastics, there was 13–18% unable to be collected and uncontrollably disposed to the environment. Then, we construct the plastic cycle, in which all the imported/domestic flows, single/multiple uses, and recycle/disposal flows are represented in proportional dimensions. This overall yet quantitative picture is an important data-driven basis for proposing plastic waste management solutions toward circular economy practice. As analyzed, the most challenge for waste management in Vietnam is to control single-use products (occupied 15.96% of total plastics) and indiscriminate waste in the environment (occupied 20.36% of total plastics). The case study for polyethylene terephthalate shows the need for expanding producer’s responsibilities to improve plastic recovery efficiency.

中文翻译:

向循环经济实践发展塑料循环

摘要 本研究为越南的循环经济实践发展了一个塑料循环。首先,我们分析了 2018 年有关塑料垃圾的经济部门与环境问题之间的相互关系。该研究方法将跨学科平衡与生命周期清单相结合,其中投入产出(IO)表既是计量经济工具,也是确定塑料的原始数据库行业之间的 IO。因此,超过 60% 的使用后塑料被回收用于生产过程(称为再生塑料),近 40% 的用后塑料离开了生产过程(称为废弃塑料)。在回收塑料中,有 10-15% 来自贸易村的非正式回收收集;在处理过的塑料中,有 13-18% 无法收集并不受控制地排放到环境中。然后,我们构建了塑料循环,其中所有进口/国内流量、单次/多次使用以及回收/处置流量都以比例维度表示。这种全面而量化的图景是为循环经济实践提出塑料废物管理解决方案的重要数据驱动基础。据分析,越南废物管理面临的最大挑战是控制一次性产品(占塑料总量的 15.96%)和环境中的不分青红皂白的废物(占塑料总量的 20.36%)。聚对苯二甲酸乙二醇酯的案例研究表明,需要扩大生产商的责任以提高塑料回收效率。这种全面而量化的图景是为循环经济实践提出塑料废物管理解决方案的重要数据驱动基础。据分析,越南废物管理面临的最大挑战是控制一次性产品(占塑料总量的 15.96%)和环境中的不分青红皂白的废物(占塑料总量的 20.36%)。聚对苯二甲酸乙二醇酯的案例研究表明,需要扩大生产商的责任以提高塑料回收效率。这种全面而量化的图景是为循环经济实践提出塑料废物管理解决方案的重要数据驱动基础。据分析,越南废物管理面临的最大挑战是控制一次性产品(占塑料总量的 15.96%)和环境中的不分青红皂白的废物(占塑料总量的 20.36%)。聚对苯二甲酸乙二醇酯的案例研究表明,需要扩大生产商的责任以提高塑料回收效率。塑料总量的 36%)。聚对苯二甲酸乙二醇酯的案例研究表明,需要扩大生产商的责任以提高塑料回收效率。塑料总量的 36%)。聚对苯二甲酸乙二醇酯的案例研究表明,需要扩大生产商的责任以提高塑料回收效率。
更新日期:2022-01-01
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